/**
 * Global styles, CSS custom properties, and shared components.
 *
 * All color tokens live here so the primary and secondary palettes can
 * be tweaked from a single place. Components (buttons, form fields)
 * defined here are reused across login and dashboard views.
 */

:root {
    --color-text: #111;
    --color-text-muted: #555;
    --color-primary: #2ba6cb;
    --color-primary-dark: #228ba8;
    --color-secondary: #ed7e39;
    --color-secondary-dark: #c7652a;
    --color-bg: #f5f7fa;
    --color-surface: #ffffff;
    --color-border: #d9dee5;
    --color-border-strong: #b6bfcc;
    --color-error: #c0392b;
    --color-error-bg: #fdecea;
    --color-success: #1f8a4c;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 40px;

    --shadow-card: 0 2px 8px rgba(17, 17, 17, 0.06);
    --shadow-card-lg: 0 10px 30px rgba(17, 17, 17, 0.12);

    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        Helvetica, Arial, sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-stack);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover,
a:focus-visible {
    text-decoration: underline;
}

:where(button, input, select, textarea) {
    font: inherit;
}

:where(button, a):focus-visible,
:where(input, select, textarea):focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/**
 * Button component (BEM)
 */
.button {
    --button-bg: var(--color-primary);
    --button-bg-hover: var(--color-primary-dark);

    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    min-height: 42px;
    padding: 0 var(--spacing-lg);
    border: 0;
    border-radius: var(--radius-sm);
    background-color: var(--button-bg);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 120ms ease, transform 120ms ease;
}

.button:hover:not(:disabled),
.button:focus-visible:not(:disabled) {
    background-color: var(--button-bg-hover);
}

.button:disabled {
    cursor: not-allowed;
    opacity: 0.65;
}

.button--primary {
    --button-bg: var(--color-primary);
    --button-bg-hover: var(--color-primary-dark);
}

.button--secondary {
    --button-bg: var(--color-secondary);
    --button-bg-hover: var(--color-secondary-dark);
}

.button--ghost {
    --button-bg: transparent;
    --button-bg-hover: rgba(43, 166, 203, 0.08);
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.button__spinner {
    display: none;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.button.is-loading .button__spinner {
    display: inline-block;
}

.button.is-loading .button__label {
    opacity: 0.7;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/**
 * Form field component (BEM)
 */
.form-field {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-field__label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
}

.form-field__required {
    color: var(--color-secondary);
}

.form-field__input {
    min-height: 42px;
    padding: 0 var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background-color: var(--color-surface);
    color: var(--color-text);
    transition: border-color 120ms ease, box-shadow 120ms ease;
}

.form-field__input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(43, 166, 203, 0.18);
}

.form-field__input:disabled {
    background-color: #f0f2f5;
    cursor: not-allowed;
}

.form-field__error {
    min-height: 1em;
    font-size: 0.85rem;
    color: var(--color-error);
}

.form-field--invalid .form-field__input {
    border-color: var(--color-error);
}